baber/WOPTO huggingface dataset:
Patent GB-1501198-A (GB)
Title: Devices for forming an annular recess around a central hole
IPC: B23B51/10
Filed: 1976-06-16
Abstract: 1501198 Annular rebating device; grinding NATIONAL RESEARCH DEVELOPMENT CORP 16 June 1976 [20 June 1975] 26361/75 Headings B3C and B3D [Also in Division B5] A device 10 for forming an annular rebate 12 around a hole 14 in material 16 such as wood, Fig. 4, and which may be hand driven through a ratchet drive 28, Fig. 1, be an attachment for a power tool 48, Fig. 5, or an integral part of a power tool (51, Fig. 6, not shown), comprises locating means, spigot 18 for engaging the hole, one or more abrading or, as shown, cutting means, blades 20, for removal of material around the hole, and a depth stop 24 for engaging the surface of the material around the rebate. The abrading means may comprise a roughened metal annular surface. One or more scribing cutters 23 cut into the material along the outer periphery of the rebate to provide a clean edge. The spigot, stop, cutting blades and scribing cutters may be replaceable or adjustable. In Fig. 5, the attachment is connectable to drill chuck 46 by means of adaptor 40. In Fig. 7, a hole saw 58 is detachably mounted inside the spigot 18 in order to cut the hole 14 itself in addition to the rebate and can include a pilot guide rod (70, Fig. 8, not shown) screwed into adaptor 40 for insertion into a pre-drilled centre guide hole, or a pilot drill for providing the centre guide hole as well. The details shown in Fig. 7 need not be restricted to the attachment. The hole and rebate can be covered by a plate 32 flush with the material surface to form a trap assembly for use in electrical installations in houses.
Patent GB-491277-A (GB)
Title: Improvements in or relating to piezo electric crystal elements
IPC: H03H9/19
Filed: 1937-09-30
Abstract: 491,277. Piezo - electric crystals. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 30, 1937, No. 26523. Convention date, Sept. 30, 1936. Drawings to Specification. [Class 40 (v)] A two-frequency crystal cut so as to have a single frequency in a selected X mode (this frequency being dependent on the width of the crystal along an X axis), a relatively high additional frequency dependent on the thickness, and a small or zero temperature coefficient, is cut in the manner described in Specification 464,894 except that the face of the crystal is inclined towards parallelism with a major instead of a minor open face of the mother crystal. Specification 457,342 also is. referred to.
Patent GB-1350266-A (GB)
Title: Electro-optical modulation device
IPC: G02F1/01
Filed: 1971-04-19
Abstract: 1350266 Modulating light PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [13 April 1970] 26607/71 Heading H4F [Also in Division Gl] Apparatus for modulating the orientation of the plane of polarization of a light beam which serves as an information carrier in an optical measuring system (i.e. the orientation at the input is variable), comprises at least three birefringent elements arranged in series with suitable relative orientations, at least an intermediate element being an electro-optic crystal (KDP) to which is applied a square wave voltage having an amplitude such that the plane of polarization is effectively rotated through 45 degrees counterclockwise and clockwise according to the instantaneous sign of the square wave voltage. As particularly described the other two elements are #/4 plates and the apparatus may form part of an arrangement for determining the orientation of the fixed or slowly varying plane of polarization of an input light beam, as in Specification 1,248,752, or part of an arrangement for determining the movement of one object relative to another, as in Specification 1,282,048. In both these latter cases a harmonic voltage is applied to the electro-optic crystal, and the output beam is divided into two portions which are fed to relatively crossed analysers and photodetectors. As explained in the present Specification, the frequency spectrum of the signal from each photodetector is very extensive when a harmonic voltage is used, and replacement by a square wave voltage simplifies the signal processing considerably.
Patent GB-315145-A (GB)
Title: Improvements relating to fluid pressure operated hand tools
IPC: B25D9/14
Filed: 1928-09-17
Abstract: 315,145. Consolidated Pneumatic Tool Co., Ltd., Owen, J. A., and Vass, J. U. Sept. 17, 1928. Percussive tools. - In pneumatic hammers &c. of the type in which the hand piece c is movable longitudinally to actuate the throttle valve, the exhaust port d is arranged in the head b, and registers with a port e in the hand piece onlv when the latter is moved down to working position. A spring f returns the hand piece to the inoperative position.
Patent GB-482310-A (GB)
Title: Locking and releasing mechanism for swinging doors or the like
IPC: E05C9/02
Filed: 1936-10-01
Abstract: 482,310. Stays; fastenings. GRISWOLD, F. C. Oct. 1, 1936, No. 26669. [Classes 44 and 65 (i)] A stay for holding a door fully open comprises a bar 9 pivoted to the door and sliding in a loop 7 on a bracket fixed to the lintel, the bar 9 having a return end 16, Fig. 16, which engages a loop 8 adjacent to the loop 7 to limit the opening of the door, and a cranked part 14 which drops behind the loop 7 to hold the door open ; the door is released by rotating the bar 9 about an axis substantially parallel to its length so that the end 16 acts as a fulcrum and the part 14 is raised to a position in which it can slide through the loop 7. To this end the pivot of the stay-bar 9 comprises a member 12, Fig. 13, fixed to the bar 9, universally pivoted by means of a hemispherical head 11 to a socket 10 on the door, and the lower end of the member 12 is universally pivoted to a link 22, so that a pull on the link 22 when the door is open rocks the stay-bar 9 in the required manner ; the link 22 is connected by a crank 21, Fig. 1, and vertical rod 19 to a handle 17 conveniently situated on the door. The handle of the right-hand door in Fig. 1 also operates a double fastening comprising latches 4, Fig. 6, at top and bottom, pressed into engaging position by springs 27 and retractable by collars clamped on the vertical rods 19 connected to the handle, the crank 21 on this door being pivoted to the collar of the upper latch mechanism.
Patent GB-684329-A (GB)
Title: Improvements relating to machinery for the decoration of pottery or other ware
Inventor: GUTHRIE PETER
IPC: B28B11/00
Filed: 1949-10-20
Abstract: <PICT:0684329/III/1> <PICT:0684329/III/2> <PICT:0684329/III/3> <PICT:0684329/III/4> A machine for producing lines, bands or edgings on pottery or other ware comprises an applicator brush to which the decorating medium is fed by way of a feed duct of very small bore into which the liquid medium is injected through a non-return valve under the action of a pump, the pump strokes being effected in synchrony with the application of the brush to the ware.  Referring to the drawings motor 11 rotates shaft 13 and via clutch 14 the train of wheels 15, 16 and 17, thus rotating the decorating head.  The motor also rotates shaft 20 carrying cams 21 which via link 18 operates clutch 14, cam 22 which raises rubber headed plunger 29 and a pair of cams 35 operating table 40 to centre the ware thereon.  The action of cam 21 in lowering the top portion of link 13 to operate clutch 14 also operates lever 71 which acts on three plungers.  The first plunger 61 transmits the action to lever 76 which moves pawl 77 on to adjustable shield 78a, allowing spring 80 to actuate an arm 79 carrying the brush assembly 84.  The second plunger actuates a cable which draws the brush down into its decorating position while the third plunger 110 connected through toggle levers 111, 112 rotates bar 113 carrying one or more brush-holders 114 adapted to engage upon the surface of the articles and produce circular lines inwards from the periphery.
Patent GB-799649-A (GB)
Title: Improvements in or relating to motor reversing switch
IPC: H01H21/58
Filed: 1956-09-04
Abstract: 799,649. Snap-action switches; controllers. CLARK EQUIPMENT CO. Sept. 4, 1956 [Sept. 7, 1955], No. 26988/56. Classes 38 (3) and 38 (5). A motor reversing switch comprises two sets of contacts, each set having a first pair of fixed elements and a co-operating second pair of elements movable alternately into and out of contact with the respective fixed elements, an operating member having a neutral " off " position and two operating positions, and snap action means between the operating member and the second pair of elements. The fixed contacts 15, 16 are arranged on conductor strips 11, 12 having terminals 52, 54, and the movable contacts 26 ... 29 are mounted on levers 17, 18 pivoted at 19 and connected to terminals 24. Each set comprises a lever 17 or 18, the contacts 26, 27 or 28, 29 carried thereby and the cooperating fixed contacts 15, 16. The operating member comprises a handle 32 pivoted at 33 and connected by U-shaped toggle members 42 and tension springs 45 to the mid-points of levers 17, 18, the bights 41 of members 42 being located in recesses 40 in arms 39 secured to levers 17, 18. Counter-clockwise movement of handle 42 from the Fig. 3 position causes the left-hand spring toggle to move over centre to open contacts 15, 27 and close 16, 26 to give the "off" position shown in Fig. 7. Further movement of the handle in the same direction causes the right-hand spring toggle to go over centre to open contacts 16, 28 and close 15, 29, thereby reversing the connections with respect to Fig. 3. Stops 46 limit movement of the handle, and an arm 49 fixed to the handle cooperates with studs 47 on levers 17, 18 to give positive actuation.
Patent GB-703993-A (GB)
Title: Recovery of material from roaster gases by electrostatic precipitation
Inventor: HEDBERG CARL WILLIAM JULIUS
IPC: B03C3/013
Filed: 1950-11-06
Abstract: In a method of recovering suspended materials in gases derived from the roasting of sulphide ores, in particular zinc sulphide ores, by electrostatic precipitation, sulphuric acid is injected into the gases before the precipitation stage.  The amount of sulphuric acid injected is such that the material recovered has a water-soluble sulphate content greater than 6 per cent. calculated as sulphur.  The material recovered is stated to have an extremely low chlorine content.  The gases may be cooled or moistened before the precipitation stage, and may be first passed through mechanical separators to remove the coarser material.
Patent GB-635556-A (GB)
Title: Improvements in or relating to buildings
IPC: E04B2/56
Filed: 1946-09-09
Abstract: 635,556. Walls. BURGESS, G. N., TOWNDROW, F. E., and RANSON, G. F. Sept. 9, 1946, No. 27047. [Class 20 (iv)] A wall comprises a number of pre-cast or cast in situ concrete uprights, each having longitudinal flanges spaced apart across the width of the wall and between which are assembled super-imposed pre-cast blocks having recesses in their end faces, which register with the space between the flanges on the uprights, to form a substantially closed throughway, the opposing walls of either or both the uprights and blocks having projections which form a key for grouting, which is poured between the blocks and uprights to lock them together. In the form shown, grooved foundation blocks 24 are spaced at intervals on the main foundation 29 and support pre-cast, I-section, concrete pillars 10. Projections 12 protrude from the web portion of the pillars. Precast concrete blocks 15 are laid dry between adjacent pillars, engaging each other by tongues 25 and grooves 26 formed on their horizontal edges. Grooves 16 are formed on the end faces of the blocks, a curved portion 20 registering with the recess 11 on the adjoining pillar, whilst the faces 17 of adjoining blocks nearly touch on the outer side of the pillars, and parts 18 are spaced apart, having the inner side of the pillars exposed and flush with the inner faces of the blocks. Grouting is poured between the uprights and blocks, interlocking the latter with the projections 12 on the uprights. The upper ends of the uprights are tied by rebated and overlapping lintel blocks 33 which are engaged by a pin 35 extending from the top of each upright and passing through the lintels at the point of overlap. Floors are supported by angles 40 attached to the uprights.
Patent GB-1530251-A (GB)
Title: Esters of 6,11-dihydrodibenzo-(b.e.)-thiepin-11-one-3-alkanoic acids and processes for making same
IPC: C07D337/12
Filed: 1977-06-28
Abstract: 1530251 Dibenzothiepins SYNTEX (USA) Inc 28 June 1977 [19 July 1976] 27056/77 Heading C2C Dibenzothiepins are prepared by the following route: (R = H, Me; R<SP>2,3</SP> = H, C 1-6  alkyl, Ph, PhCH 2  or R<SP>2</SP> + R<SP>3</SP> = C 4-6  alkylene). These esters are anti-inflammatory and fibrinolytic agents, analgesics, antipyretics, platelet aggregation inhibitors and smooth muscle relaxants, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1418707-A (GB)
Title: Support structures for overhead wires of electric railways
IPC: B60M1/20
Filed: 1973-06-06
Abstract: 1418707 Supporting overhead cables SIEMENS AG 6 June 1973 [6 June 1972 30 June 1972] 27092/73 Heading H2C Beam members 7, vertical members 8a, and posts 8 are added to an arrangement of transverse cables used for the alignment and support of overhead contact wires 5, above rail tracks 9, of a multi-track electric railway system. Members 7, 8a, constitute links in the tensioned transverse alignment cables 4, 6, which, together with longitudinal suspension cables 3 and the crossspan suspension cable 1a, form an otherwise conventional support system, stretched between masts 1. Field A, adjoining a mast, and field B, away from a mast, show alternative arrangements. In the event of damage, e.g. by a pantograph fouling an alignment cable, these arrangements minimize consequential damage to the overhead wires for neighbouring tracks. If posts 8 become broken, members 7, 8a can remain safely suspended from cable la. This latter feature is absent from a simpler arrangement of Fig. 1 (not shown), in which members 8a and links 12 are missing, and the posts 8 must then be of more robust construction, e.g. of slim rectangular section, extending along the side of the track.
Patent GB-1384607-A (GB)
Title: Liquid dispensing apparatus
IPC: G01F23/64
Filed: 1972-06-12
Abstract: 1384607 Dispensing liquids J F EARDLEY Ltd 6 June 1973 [12 June 1972] 27357/72 Heading A4T [Also in Division G1 Apparatus for detecting presence of gas/absence of liquid in a supply line comprises a chamber 30 Fig.2 with a float 36 supporting a magnet 38 outside the chamber a fluidic signal device 42 controlled by a second magnet 40 which is oriented to be repelled by the first magnet. The apparatus 42 may be included in a beer dispensing system with a pump 12 delivering the beer via a beer meter to a button-controlled bar dispenser 26, 24. Air flowing via a line 46 is obdurated by the magnet from passage through holes 50 and thus pressure in line 54 rises. A fall in pressure in turn may control a bell, lamp or pump motor. A second embodiment includes a ping-pong ball float 58 Fig.3 operating a spool 60 via a push-rod 62. A magnet 38 in the spool coacts with magnet 40. In either case the chamber can be vented of excess gas by valve 56. Feed supply and discharge to the chamber may be via tangentally arranged pipes 32, 34 providing centrifugal separation of liquid and gas. In a modification the chamber may comprise a local enlargement of a flow passage with a guided float.
Patent GB-829279-A (GB)
Title: Improvements in or connected with vacuum flasks and the like and closures therefor
IPC: A47J41/00
Filed: 1958-08-26
Abstract: 829,279. Stoppers for vacuum flasks. ISOVAC Ltd., and CATLIN, R. J. Aug. 26, 1958, No. 27380/58. Addition to 796,253. Class 125(3). In an improvement in or modification of the vacuum flask claimed in the parent Specification the outlet 2 had lugs 6 at an angle to the plane of the rim and the depending wall 10 of the stopper 8 has inwardly directed projections 11 also at an angle so that when the projections are engaged beneath the lugs 6 and the stopper 8 is turned a wedging action forces the stopper into close contact with outlet 2 to form a leak tight joint.
Patent GB-813238-A (GB)
Title: Deflecting coil arrangement for cathode ray tubes
IPC: H01J29/76
Filed: 1957-08-30
Abstract: 813,238. Cathode ray tubes. STANDARD TELEPHONES & CABLES Ltd. Aug. 30, 1957 [Sept. 4, 1956], No. 27409/57. Class 39(1). In deflecting-coil arrangements with yokes members of ferromagnetic material, the yoke member 1, Fig. 7 is provided at one or both ends with cut-out portions 7 through which the coil windings 4 are passed so that the front end of the yoke member may be located close to the cone of the tube and windings not participating in the generation of the useful field are screened from the deflection space by the protruding end of the yoke member. The yoke member 1 may be flared at one end, or have a separate flared piece 1a, Fig. 15, to fit over the cone of the tube. The coils may be jacket-core for one direction of deflection and toroidal for the other, and cut-outs for the toroidal coils may be formed from one of the joints separating the parts 1, 1a.
Patent GB-386050-A (GB)
Title: Improvements in or relating to safety valves
IPC: F16K17/10
Filed: 1931-10-02
Abstract: 386,050. Valve components. COCKBURNS, Ltd. and MAcNICOLL, D., Clydesdale Engineering Works, Cardonald, near Glasgow. Oct. 2, 1931, No. 27416. [Class 135.] Seats.-In a safetyvalve of the kind described in Specifications 16038/09 and 13698/15, [both in Class 135, Valves &c.], comprising a main valve moving with a piston subject on one side to outlet pressure the main valve seat 2 is spigoted to the waste steam casing 6 and is integral with a flange 8 whereby the seat is secured by the bolts 9 which clamp together the flanges 4<1>, 6<1> of the two casings.
Patent GB-762168-A (GB)
Title: Improvements relating to fuel supply installations
Inventor: SMEDLEY FREDERICK EDWARD SAMUE
IPC: B64D37/20
Filed: 1954-09-22
Abstract: 762,168. Rotary pumps; gas turbines. ROLLS-ROYCE, Ltd. Sept. 1, 1955 [Sept. 22, 1954], No. 27457/54. Classes 110(2) and 110 (3). [Also in Group XXIX] A fuel installation comprising a number of fuel storage tanks which supply a common duct 12 leading to one or more internalcombustion engines, is provided with a number of rotary metering pumps 10 which are mechanically interconnected and driven by a variablespeed motor. The speed of the latter is controlled to maintain a predetermined pressure in the duct 12. The motor 16 may be an air turbine supplied with compressed air from a gas-turbine plant. Alternatively, it may be an hydraulic motor of the gear or vane type. Preferably, the source of energy of the motor is different from that supplying the main plant. Independently-driven fuel booster pumps may be installed. As shown, the pumps 10, of the sliding-vane type, are driven through gearing from a shaft 19, the gear ratios being designed to effect even emptying of the fuel tanks, the capacities of which may differ. The means regulating the speed of the motor may comprise a pressure-sensitive device subjected to the fuel pressure in the duct 12 to control the flow of working fluid supplied to the motor. Pump inlets 11 lead from the tanks. By-pass valves 15 -are provided. Friction clutches, or shearnecks may be included in the drives to the pumps so that, if one seizes, the other pump drives are not affected. The supply of air to the turbine 16 is controlled by a pressure-sensitive device comprising a diaphragm 23 subjected on its lower side to the pressure in the duct 13 through a small orifice 24. A spring 25 presses the diaphragm downwards to open a valve 26. Compressed air is supplied through a duct 27 and passes to the turbine when a double-seated valve 29 opens. A diaphragm 32 has a restricted orifice 33 leading to a chamber 34 provided with a spring 35. With a low pressure in the delivery duct 13, the valve 26 is open and air, passing through the orifice 33 escapes to atmosphere, or to the fuel tanks, by way of outlets 37. The valve 29 opens, due to the lowering of the diaphragm 32. A high pressure in the duct 13 causes the closing of the valve 26; the pressure in the chamber 34 rises and so throttles the air supply to the turbine. A venturi duct may be included in the duct 13.
Patent GB-948313-A (GB)
Title: Improvements in fuel elements for nuclear reactors
IPC: G21C3/04
Filed: 1962-07-17
Abstract: A nuclear reactor fuel element (see Division G6) includes a fission products trap formed from metal impregnated activated charcoal. The charcoal may be impregnated with copper by soaking the charcoal in an alcohol solution containing copper nitrate for 2-3 days.  The charcoal is then dried under vacuum at 100 DEG C., baked at 300 DEG C. to decompose the copper nitrate to copper oxide and finally treated with hydrogen at 500 DEG  C. to convert the oxide to metallic form.  Silver is deposited on the charcoal from an ammoniacal silver acetate solution, and then converted to an oxide and reduced to metallic form in the same manner as the copper. Activated alumina may be used instead of activated charcoal.ALSO:A nuclear reactor fuel element (see Division G6) includes a fission products trap formed from metal impregnated activated charcoal.  The charcoal may be impregnated with copper by soaking the charcoal in an alcohol solution containing copper nitrate for 2-3 days.  The charcoal is then dried under vacuum at 100  DEG C., baked at 300  DEG C. to decompose the copper nitrate to copper oxide and finally treated with hydrogen at 500  DEG C. to convert the oxide to metallic form. Silver is deposited on the charcoal from an ammoniacal silver acetate solution, and then converted to an oxide and reduced to metallic form in the same manner as the copper.  Activated alumina may be used instead of activated charcoal.
Patent GB-390213-A (GB)
Title: Improvements in and connected with keys and keyboards or manuals of musical instruments
IPC: G10H1/34
Filed: 1931-10-03
Abstract: 390,213. Magnetic switches. WALKER & SONS, Ltd., J. W., Francis Works, Southfield Road, Acton, London, and SYMONDSON, A. H., 69, Jersey Road, Osterley, Hounslow, Middlesex. Oct. 3, 1931, No. 27518. [Class 38 (v).] Organ &c. keys may operate their contacts magnetically. The key contacts o, n may be enclosed in a case m with glass top q. The spring contact o carries an armature p and is normally held out of contact with contact n by magnet b<1> on key a, being allowed to close on depression of the key.
Patent GB-665067-A (GB)
Title: Improvements in or relating to means for fixing frames of doors or the like
IPC: E06B1/60
Filed: 1949-10-27
Abstract: 665,067. Fixing door &c. frames. LENTON, J. E., and DOWNES, E. W. Sept. 27, 1950 [Oct. 27, 1949], No. 27539/49. Classes 20(iii) and 20(iv) A door or like frame 9 is fixed to a cavity wall 1, 2 by securing the frame to a holdfast 4 which has a shank 6 located wholly in the cavity 3 of the wall, and a portion 7, 8 which projects laterally from the shank into the masonry of the wall. The holdfast is flanged at 5 for attachment to the jamb 9, and the shank split to form laterally projecting portions 7, 8, which are twisted so that portions 7a, 8a rest flat on the upper surface of the masonry and portions 7b, 8b have their edges uppermost to cause any moisture creeping along parts 7a, 8a to drip into the cavity. The free ends of parts 7a, 8a are also bifurcated. The holdfast is secured to the jamb with parts 7a 8a resting on the top of the partly built wall which is then completed. The wall 2 extends beyond wall 1 so the jamb abuts the end of wall 1 and the inner face of wall 2, and a damp proof course 11 of flexible material is located between the jamb and the end face of wall 1 and abuts the inner face of wall 2, its end being curled inwardly.